70530220 has 12 divisors (see below), whose sum is σ = 148113504. Its totient is φ = 28212080.

The previous prime is 70530199. The next prime is 70530253. The reversal of 70530220 is 2203507.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1763236 + ... + 1763275.

It is an arithmetic number, because the mean of its divisors is an integer number (12342792).

Almost surely, 2^70530220 is an apocalyptic number.

It is an amenable number.

70530220 is an abundant number, since it is smaller than the sum of its proper divisors (77583284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70530220 is a wasteful number, since it uses less digits than its factorization.

70530220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526520 (or 3526518 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 70530220 is about 8398.2271938785. The cubic root of 70530220 is about 413.1664793642.

Adding to 70530220 its reverse (2203507), we get a palindrome (72733727).

The spelling of 70530220 in words is "seventy million, five hundred thirty thousand, two hundred twenty".